Hacker News new | ask | show | jobs
by atonse 1713 days ago
Usually it negotiates up (thats what USB PD is)

Like the device it’s plugged into actually has to communicate and negotiate that it wants something higher.

Until then it’ll just be I think 5V and up to maybe 1amp? (5W)

1 comments

Also, old timey phone lines, like back in the day when you plugged a phone into the wall, that had 48V DC on it. But not 5A, mor3 like 600ma. But in theory, not enough to kill.
48 approaches but usually doesn’t exceed what it takes to enter dry skin.

But also USB-PD doesn’t start at 48VDC.

And it is constantly monitoring for shorts. So if you did manage to get shocked it would only be for milliseconds.